Chicken Nuggets, Please!

What to feed a picky eater? If Grady could ask, he'd say "Chicken Nuggets, please!" They are his favorite food at the moment.

He likes almost everything he tries.... the problem is, I can't get him to try anything new! Put it in a squeeze tube like Plum's baby food, and he'd eat anything, but a sliced carrot or spaghetti on his high chair tray... forget it. Usually what I do when I want him to try something new is wait until he's definitely hungry, and then put only that one food on his tray. Usually one of two things happens... 1) he uses his arm to sweep it all off of his tray (and then goes to time out!), or 2) he just sits and stares at it, and doesn't eat it at all.

Any suggestions? I don't want him to be a french fry, chicken nugget eater!